Hinged last



Aug, 9, 1927.

E; W. GERRISH HINGED LAST Filed Oct. 16. 1926 lwenor: Edward/ WGerrllsh,

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Hirte-ED VI .A'sn 1 Application filed October 16, 1926;` Serial No.y 141,922.

- trated in the drawings, this :torni .having y.so

been found to give satisfactory and reliable results, although it is to loe understoodthat the various instiunientalities of which theinvention consists eanloe variously arranged and organized, Sand the .invention is `not limited lto the preciseV arrangement. and vorganization of these `ins trumentalitie s fas herein shown andv `described exiceptwasrequired by thes'cope of theappendedclainis. V

`Oithe drawings: Figure 1 represents a longitudinal vertical section of, a .last embodying the principles of thejpresent invention and Yin extended f position.

Figure 2 vrepresents a` vertical section Vo same on line 2, 2 on Fig.. 1.

Figure represents ahorizontal section of ,-1 a! portion of same online 35 3, on 151g. 1., loefore one Vofthe securing p insfhas heen'driven throughthehinge members.V

Figure 4 represents a longitudin'aljvertlcal section of thelast in its shortened position.

. throughout the of the hinge plates.

' Figure 5 represents aside elevation of f Figure- 6 represents the :same. f

other -hingeplfateiand f Figure@v represents a Verticalfs'eetion of same'on-linel8, 8fonfFig.f7.-'y .Similar characters indicate like'v parts severaligures of the drawlast divided o 'n a substantially? vertical vline andhaving a transverse V-shaped noteh 12 infthe v`upperfpart thereof.l u

The fparts. 1 0- and ,11, vhave out therein ftheV grooves 13 and llljin `vvhih is insertedwthe hinge 15h51 whichgs'aid-ifore part 41 0 andiheel partllarenonneeted together?.

` tend `loeyond theou'te'r faces of fthe, plates 16. and 17 and are positioned in serni-cylindricall .an end'elevatnilfof and 17 are at yone sidejof the centers thereof,

opening.therethrough The .opening 18 y the ,l plate 16'v is adaptedto receive the annula-r transverse extension `19 lsurrounding 1 the smaller opening 20' formed in the plate 17.

iThis extension 19 is punched'vup from the metalplate 17 and afterfit `-hasloeen posi' tioned'vvithin 'the' opening 18 vits endis up- "set as at 21 toforrn a flange or shoulder dis- .posed in the recess 22 inthe plate 161andf` serving to Aprevent the-separation-of kthe-two hinge plat-esl 16 and 17.

.It isobvious that a hinge thusconstructed 1s very' strong and the extension 19n1akes a very veffective pivot about `Which the platel i may freely'move. l l

1nthe opening 20 lOfi posed ahifngfepin23 which isvdriven therein 4so tightly that the'plate .17, and hinge pin 2 3 a re' `immovable relatively to each other.

` The opposite ends ofthe hinge spin 23 eX' depressions 24V formed'in the opposed'fac'es of .the fore part Y'10 and heel part 11.

-These semicyli'ndrical'depressions 24 eX- tenfd transversely ofthese opposed faces and.

4 are perpendicular tothe side vvalls'offthe grooves '13 and 14.

vEach plate Y16 and 117 cylindrical lhole 25 adapted to .receive a seing in the heel part'11V andlocking the plater is adapted to L lock-the plate ljin V,The ycylindrical yholes` 25 While on the opposite lside of. saidcenters these yplates-are provided l With :oncentr' ier` grooves .27.

The lower ends `of these grooves 27Vl1ave a Width equal vto the 'diameter vof the :securdiaineter of'fsaidrpinsso that when a seciiring pin`-2 6 enters'tliis vnarrow end 28it will ui@ pies itis disn l is provided with es `curing pin 26, rone of these securing pinshbe-H ing ;pins V'26,:loutiat.theirupper vends 128 these'f v v vgrooves areot sligl1 tly--lessl A.Width .than the, dre-Wings, 1 0 and, 11 rpleell't speetivlely, a fore partfand aufheelpart of av be :locked {therein} -Luitil remove-it therefrom.

force applied Vto 'i orl shorten' the llast 'the securing pinsI 26 Will `move :freely -in these lslots 27 zuntil" they nearlyv r'eaclrtliejupperendsjthereof Whenand heel part 11 in the position indicated infFig. 4, keeping the last in this position in readiness for the operator to i-n- .Under normal conditions this spring 30` keeps tlie'parts 10 and 11 in their extended position, as indicated rin Figpl, with the forceV the toe `and heel part into y positiony lower opposedfaces lof* the fore heel part in Contact.

The spring has sufficient tension Ato part and when the securing pins 26 are freely movy able inthe slotsV 27,'but this tension is insulicient to move the parts `10 and,` 11 relative' to each other when the securing pins f V2G are ainn'ied into the narrow portions 2S.'

yThe upper and lower ends ofthe verti cal lgrooves 18 and 14formed in the opposed lil faces ofthe toe part 1() and heel part- 1l terminate between the tops and bottoms of the parts 10 and '11. 'By doing this, the bottoni of the Vlast is free from any. slotv eX-l tending therethrough leaving a solid un.-

i' 3o o cent to one face of the plate 17, said plate broken surface when the last is extended'.y

t The. spring 30 crosses thenotch 12 adjaforming aprotection vforsaidplate.

Owing to the location of the spring ad- Ajacentto the side Vface ofthe plate 17 and ncarthe aXs ofthe hinge pin 23, the spring a 30 cannot be easily tampered with and dis' lodged. from its'soclrets 29 and 31.

.LThe plates 16 and y17 accurately fit the Ygrooves and VV14 with their outer YwallsY -40 contacting with'the walls of these grooves cl3 aiid14,'so that lateral play Lof the fore partl lOr'a-ndheel part 11 is effectually preveiit'ed` f Y l Y. The projecting ends of lthehinge pin 23 vdisposed* in the semi-'cylindrical depressionsv A f 24alsoassists in preventing any lateral play between the two parts'lO and'll.

l' The 'inner ends of thesecuring pins'r26 Y are tapered as Ashown at 32 soy that when driven through, the cylindrical opening 25 'an'dconcentric grooves 27, they 'will force the 1 projecting ends of the hinge pin23 into firm-contact with Vthe bottoms ofthe semi- `Cylindrical depressions '24., l

conditioiisit is quiteessential that the entire peripheryshall be in vclose contact with the walls of the semi-cylindrical. grooves 24. When., assembled the plate V 17 'and Vthe hingefpin are immovable .relatively toy the 'heel part 11 and in breaking the last the pla-te- 16. moves about the periphery of the, annular flangel'Q formed upon theplate 17.'V During this `shortening movement each narrow portion 28 and retain the last in shortened position, as shown in said Fig. 4.

Vhen the last in this position is inserted of the securing pins 26 move toward the within a shoe pressure applied to one of the parts of the last will force the'pins 26v out of the narrow portion 28 and permit the spring 30; to effect a lengthening of `the last.

VThis makes a very effective last-which is simple in construction and easily assein bled. When assembled it has great rigidity and there is no opportunity for any lateral play between the two parts thereof. v

It is believed thatthe operation". and

transverse seini-cylindrical depressions in their opposed faces; vertical plates secured one in each part and overlapping eachother,

and one movable relatively to the other; and

a. pivot pin immovably positioned in one of said vplates Awith its opposite en-ds extend. y

ing beyond the outer faces 'of said plates and disposed in said depressions.

2. A last consisting of a fore part and a heel part having alined vertical slots and transverse seini-cyliiidrical depressions in ,l their opposed faces; vertical plates secured Vonein'each part and overlapping each other,

one -plate khaving an annular flange extend-A ing through the other plate, said other plate being freely rotatable uponY said titl flange; and apivot pinV irninovably secured to said flanged plate 'with its ends disposed in said depressions.

3.',A last consisting of la forey part and a i lheel part having alined vertical slot'sand transverse semi-cyliiidrical depressions 'in' their vopposed faces; vertical Vplates secured one in leach ypart and overlapping each other,

one plate having an annular flange eXtend- Y pivot pin immovably secured to saidflanged plate with its ends dispcsedin said depresn I l sions; and means formed in said plates and y This feature is of considerableimportance, as in order to secure ai rigid last under all coacting with tliesecuring means therefor whereby s aid pin ends may be forced into contact Vwith the walls vof sai-dY depressions.

4. Alast-consisting of a fore'part anda` ing through fand terminating at the outer 'Y face of the other plate and; each platehav-w iso v Lessen?" ing a concentric slot in its projecting end through lwhich extends the securing pin of the otherplate; and a pivot pin secured to saidiiaiiged plate with its ends projecting l beyond the outer faces of said plate and disposed vin said depressions.

5. A last consisting of a fore part and a heel part having yalined vertical slots `and transverseV semi-cylindrical depressions in their opposed faces; vertical plates secured one in each part and overlapping each other,

one plate having an annular flange extending through the other plate and each 'plate having a concentric slot in its projecting end through which extends the securing pin of the other plate and the upper end of each slot having a Width less than that of its' heel part having4 alined vertical slots and transverse` vsemi-cylindrical depressions in rtheir opposed faces; 'vertical plates secured one in each part and overlapping each other and one movable relatively to theothei'; a pivotpin iininovably positioned in one of said plates with its ends disposed in said Y depressions; and a spring between said parts adjacent the side of one of said plates.v

a 7. A last consisting ofa fore part and a heel part having alined vertical slots and transverse semi-cylindrical depressions in their opposed faces, said slots terminating' Within the top and bottom Walls ofVV said parts; `verticall plates secured one in eachl part and overlapping each other and one movable relativelyV to the other;y and a pivot pin immovably positioned in one of said pressions on opposite sides of said plates.

8. A last consisting of affore part and a heel part ha'vin'galined vertical slotsfand Aplates with its ends disposed in said de.V v

transverse .semi-cylindrical .depressions .in

their opposedfaces; vertical plates'secured one in eachpart andove'rlapping eachother l and oneinovable `relatively to the other; a pivot pininiinovably positioned in one of said plates with its ends disposed in said de- -f pressions 'on opposite sides of said plates;

and a helical spring bet'vv'eensaid parts ad-` jacent the si-deof one of 'said plates With its ends disposed iii-sockets Vin said opposed.

faces. A. c v. 9. Alast consisting of a fore part anda heel part having alined vertical slots.. and

I (l0 their opposed faces; vvertical plates securedf` f transverse senil-cylindrical depressions "in onein each part'and-overlapping eachother,

one plate having'an annular flange extending throughthe other plate With its outer endupset in a .recessl in said other plate which plate is rotatable freelyupon said ilangegand a ,pivot` pin secured ftosaid f flanged plate with its ends disposed in. said ydepressions on opposite sides of said plates.

lO. A last consisting of a fore part anda heel part connected together by a hinge consisting' of tvvo plates and pivojtallvcon nectedy by an annular-'flange on one plate extending through a cylindrical 'opening in the other plate -With its v:outer end upset reception of a securing pin in one partfand a concentric slotthrough.-Whiclil extendsv the',` l

securing pin Yof the other part.

- signed/by me a ne void smith-Biagi, Boston, VMass., "this '5th daynot'v October, l

cnnvviinn Wlenieaisn. l

disposed in alined vertical slots in said parts7 each Yplate lhaving a cylindrical hole vfor the i 

